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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef AccessibilityRenderObject_h
#define AccessibilityRenderObject_h
#include "AccessibilityObject.h"
#include <wtf/Forward.h>
namespace WebCore {
class AXObjectCache;
class Element;
class Frame;
class FrameView;
class HitTestResult;
class HTMLAnchorElement;
class HTMLAreaElement;
class HTMLElement;
class HTMLLabelElement;
class HTMLMapElement;
class HTMLSelectElement;
class IntPoint;
class IntSize;
class Node;
class RenderListBox;
class RenderTextControl;
class RenderView;
class VisibleSelection;
class Widget;
class AccessibilityRenderObject : public AccessibilityObject {
protected:
AccessibilityRenderObject(RenderObject*);
public:
static PassRefPtr<AccessibilityRenderObject> create(RenderObject*);
virtual ~AccessibilityRenderObject();
bool isAccessibilityRenderObject() const { return true; }
virtual bool isAnchor() const;
virtual bool isAttachment() const;
virtual bool isHeading() const;
virtual bool isLink() const;
virtual bool isImageButton() const;
virtual bool isImage() const;
virtual bool isNativeImage() const;
virtual bool isPasswordField() const;
virtual bool isNativeTextControl() const;
virtual bool isWebArea() const;
virtual bool isFileUploadButton() const;
virtual bool isInputImage() const;
virtual bool isProgressIndicator() const;
virtual bool isSlider() const;
virtual bool isMenuRelated() const;
virtual bool isMenu() const;
virtual bool isMenuBar() const;
virtual bool isMenuButton() const;
virtual bool isMenuItem() const;
virtual bool isControl() const;
virtual bool isFieldset() const;
virtual bool isGroup() const;
virtual bool isEnabled() const;
virtual bool isSelected() const;
virtual bool isFocused() const;
virtual bool isChecked() const;
virtual bool isHovered() const;
virtual bool isIndeterminate() const;
virtual bool isLoaded() const;
virtual bool isMultiSelectable() const;
virtual bool isOffScreen() const;
virtual bool isPressed() const;
virtual bool isReadOnly() const;
virtual bool isVisited() const;
virtual bool isRequired() const;
virtual bool isLinked() const;
virtual void setIsExpanded(bool);
virtual bool canSetFocusAttribute() const;
virtual bool canSetTextRangeAttributes() const;
virtual bool canSetValueAttribute() const;
virtual bool canSetExpandedAttribute() const;
virtual void setAccessibleName(String&);
// Provides common logic used by all elements when determining isIgnored.
AccessibilityObjectInclusion accessibilityIsIgnoredBase() const;
virtual bool accessibilityIsIgnored() const;
virtual int headingLevel() const;
virtual AccessibilityButtonState checkboxOrRadioValue() const;
virtual String valueDescription() const;
virtual float valueForRange() const;
virtual float maxValueForRange() const;
virtual float minValueForRange() const;
virtual AccessibilityObject* selectedRadioButton();
virtual AccessibilityObject* selectedTabItem();
virtual int layoutCount() const;
virtual double estimatedLoadingProgress() const;
virtual AccessibilityObject* firstChild() const;
virtual AccessibilityObject* lastChild() const;
virtual AccessibilityObject* previousSibling() const;
virtual AccessibilityObject* nextSibling() const;
virtual AccessibilityObject* parentObject() const;
virtual AccessibilityObject* parentObjectIfExists() const;
virtual AccessibilityObject* observableObject() const;
virtual void linkedUIElements(AccessibilityChildrenVector&) const;
virtual bool exposesTitleUIElement() const;
virtual AccessibilityObject* titleUIElement() const;
virtual AccessibilityObject* correspondingControlForLabelElement() const;
virtual AccessibilityObject* correspondingLabelForControlElement() const;
virtual void ariaOwnsElements(AccessibilityChildrenVector&) const;
virtual bool supportsARIAOwns() const;
virtual AccessibilityRole ariaRoleAttribute() const;
virtual bool isPresentationalChildOfAriaRole() const;
virtual bool ariaRoleHasPresentationalChildren() const;
void updateAccessibilityRole();
// Should be called on the root accessibility object to kick off a hit test.
virtual AccessibilityObject* accessibilityHitTest(const IntPoint&) const;
virtual Element* actionElement() const;
Element* mouseButtonListener() const;
FrameView* frameViewIfRenderView() const;
virtual Element* anchorElement() const;
AccessibilityObject* menuForMenuButton() const;
AccessibilityObject* menuButtonForMenu() const;
virtual IntRect boundingBoxRect() const;
virtual IntRect elementRect() const;
virtual IntSize size() const;
virtual IntPoint clickPoint() const;
void setRenderer(RenderObject* renderer) { m_renderer = renderer; }
virtual RenderObject* renderer() const { return m_renderer; }
RenderBoxModelObject* renderBoxModelObject() const;
virtual Node* node() const;
RenderView* topRenderer() const;
RenderTextControl* textControl() const;
Document* document() const;
FrameView* topDocumentFrameView() const;
HTMLLabelElement* labelElementContainer() const;
virtual KURL url() const;
virtual PlainTextRange selectedTextRange() const;
virtual VisibleSelection selection() const;
virtual String stringValue() const;
virtual String ariaLabeledByAttribute() const;
virtual String title() const;
virtual String ariaDescribedByAttribute() const;
virtual String accessibilityDescription() const;
virtual String helpText() const;
virtual String textUnderElement() const;
virtual String text() const;
virtual int textLength() const;
virtual String selectedText() const;
virtual const AtomicString& accessKey() const;
virtual const String& actionVerb() const;
virtual Widget* widget() const;
virtual Widget* widgetForAttachmentView() const;
virtual void getDocumentLinks(AccessibilityChildrenVector&);
virtual FrameView* documentFrameView() const;
virtual unsigned hierarchicalLevel() const;
virtual const AccessibilityChildrenVector& children();
virtual void clearChildren();
virtual void updateChildrenIfNecessary();
virtual void setFocused(bool);
virtual void setSelectedTextRange(const PlainTextRange&);
virtual void setValue(const String&);
virtual void setSelected(bool);
virtual void setSelectedRows(AccessibilityChildrenVector&);
virtual void changeValueByPercent(float percentChange);
virtual AccessibilityOrientation orientation() const;
virtual void increment();
virtual void decrement();
virtual void detach();
virtual void childrenChanged();
virtual void contentChanged();
virtual void addChildren();
virtual bool canHaveChildren() const;
virtual void selectedChildren(AccessibilityChildrenVector&);
virtual void visibleChildren(AccessibilityChildrenVector&);
virtual void tabChildren(AccessibilityChildrenVector&);
virtual bool shouldFocusActiveDescendant() const;
virtual AccessibilityObject* activeDescendant() const;
virtual void handleActiveDescendantChanged();
virtual void handleAriaExpandedChanged();
virtual VisiblePositionRange visiblePositionRange() const;
virtual VisiblePositionRange visiblePositionRangeForLine(unsigned) const;
virtual IntRect boundsForVisiblePositionRange(const VisiblePositionRange&) const;
virtual void setSelectedVisiblePositionRange(const VisiblePositionRange&) const;
virtual bool supportsARIAFlowTo() const;
virtual void ariaFlowToElements(AccessibilityChildrenVector&) const;
virtual bool ariaHasPopup() const;
virtual bool supportsARIADropping() const;
virtual bool supportsARIADragging() const;
virtual bool isARIAGrabbed();
virtual void setARIAGrabbed(bool);
virtual void determineARIADropEffects(Vector<String>&);
virtual VisiblePosition visiblePositionForPoint(const IntPoint&) const;
virtual VisiblePosition visiblePositionForIndex(unsigned indexValue, bool lastIndexOK) const;
virtual int index(const VisiblePosition&) const;
virtual VisiblePosition visiblePositionForIndex(int) const;
virtual int indexForVisiblePosition(const VisiblePosition&) const;
virtual PlainTextRange doAXRangeForLine(unsigned) const;
virtual PlainTextRange doAXRangeForIndex(unsigned) const;
virtual String doAXStringForRange(const PlainTextRange&) const;
virtual IntRect doAXBoundsForRange(const PlainTextRange&) const;
virtual void updateBackingStore();
virtual String stringValueForMSAA() const;
virtual String stringRoleForMSAA() const;
virtual String nameForMSAA() const;
virtual String descriptionForMSAA() const;
virtual AccessibilityRole roleValueForMSAA() const;
protected:
RenderObject* m_renderer;
AccessibilityRole m_ariaRole;
mutable bool m_childrenDirty;
void setRenderObject(RenderObject* renderer) { m_renderer = renderer; }
void ariaLabeledByElements(Vector<Element*>& elements) const;
bool needsToUpdateChildren() const { return m_childrenDirty; }
virtual bool isDetached() const { return !m_renderer; }
private:
void ariaListboxSelectedChildren(AccessibilityChildrenVector&);
void ariaListboxVisibleChildren(AccessibilityChildrenVector&);
bool ariaIsHidden() const;
bool isDescendantOfBarrenParent() const;
bool isAllowedChildOfTree() const;
bool hasTextAlternative() const;
String positionalDescriptionForMSAA() const;
PlainTextRange ariaSelectedTextRange() const;
Element* menuElementForMenuButton() const;
Element* menuItemElementForMenu() const;
AccessibilityRole determineAccessibilityRole();
AccessibilityRole determineAriaRoleAttribute() const;
bool isTabItemSelected() const;
bool isNativeCheckboxOrRadio() const;
IntRect checkboxOrRadioRect() const;
void addRadioButtonGroupMembers(AccessibilityChildrenVector& linkedUIElements) const;
AccessibilityObject* internalLinkElement() const;
AccessibilityObject* accessibilityImageMapHitTest(HTMLAreaElement*, const IntPoint&) const;
AccessibilityObject* accessibilityParentForImageMap(HTMLMapElement*) const;
bool renderObjectIsObservable(RenderObject*) const;
RenderObject* renderParentObject() const;
void ariaSelectedRows(AccessibilityChildrenVector&);
bool elementAttributeValue(const QualifiedName&) const;
void setElementAttributeValue(const QualifiedName&, bool);
String accessibilityDescriptionForElements(Vector<Element*> &elements) const;
void elementsFromAttribute(Vector<Element*>& elements, const QualifiedName&) const;
String ariaAccessibilityDescription() const;
virtual ESpeak speakProperty() const;
virtual const AtomicString& ariaLiveRegionStatus() const;
virtual const AtomicString& ariaLiveRegionRelevant() const;
virtual bool ariaLiveRegionAtomic() const;
virtual bool ariaLiveRegionBusy() const;
bool inheritsPresentationalRole() const;
void setNeedsToUpdateChildren() const { m_childrenDirty = true; }
mutable AccessibilityRole m_roleForMSAA;
};
inline AccessibilityRenderObject* toAccessibilityRenderObject(AccessibilityObject* object)
{
ASSERT(!object || object->isAccessibilityRenderObject());
return static_cast<AccessibilityRenderObject*>(object);
}
inline const AccessibilityRenderObject* toAccessibilityRenderObject(const AccessibilityObject* object)
{
ASSERT(!object || object->isAccessibilityRenderObject());
return static_cast<const AccessibilityRenderObject*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toAccessibilityRenderObject(const AccessibilityRenderObject*);
} // namespace WebCore
#endif // AccessibilityRenderObject_h
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